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Synthesis, Crystal Structure and Performance of 3,3′- Dinitro-5,5′-bis-1,2,4-triazole-1,1′-diolate Energetic Ionic Salts
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(1. Xi′an Modern Chemistry Research Institute, Xi′an 710065, China; 2. State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi′an 710065, China)

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    Abstract:

    Using 3, 3'-dinitro-5, 5'-bis-1, 2, 4-triazole-1, 1'-diolate(DNOBT) as starting material, three energetic ionic salts (DNOBT-3-AT, DNOBT-ODH, DNOBT-DHT)were synthesized by reaction with 3-amino-1, 2, 4-triazole, oxalyl dihydrazide, 3, 6-dihydrazine-1, 2, 4, 5-tetrazine, respectively, and their structures were characterized by FT-IR, NMR and elementary analysis. The single crystal of DNOBT-3-AT was cultivated, and its crystal structure was determined by X-ray crystallography. It is found that DNOBT-3-AT crystallizes in monoclinic system, space group P2(1)/c. Their physico-chemistry and detonation properties were calculated by Gaussian 09 program and Kamlet-Jacobs formula. Meanwhile, the thermal behaviors of the three compounds were studied with differential scanning calorimetry (DSC). Results show that the detonation velocities are 7736.4, 7729.56, 7974.64 m·s-1, and the detonation pressures are 26.8, 26.74, 28.56 GPa, respectively. The first exothermic decomposition peak temperatures of DNOBT-3-AT, DNOBT-ODH and DNOBT-DHT are 276.54, 257.02, 154.15℃, respectively, which shows that DNOBT-3-AT has better thermal stability than DNOBT-ODH and DNOBT-DHT.

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罗义芬,毕福强,王伯周,等.1,1′-二羟基-3,3′-二硝基-5,5′-联-1,2,4-三唑含能离子盐合成、晶体结构及性能[J].含能材料,2017,25(10):848-852.
LUO Yi-fen, BI Fu-qiang, WANG Bo-zhou, et al. Synthesis, Crystal Structure and Performance of 3,3′- Dinitro-5,5′-bis-1,2,4-triazole-1,1′-diolate Energetic Ionic Salts[J]. Chinese Journal of Energetic Materials,2017,25(10):848-852.

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History
  • Received:January 16,2017
  • Revised:May 26,2017
  • Adopted:June 07,2017
  • Online: October 26,2017
  • Published: November 06,2017